Bill Gates

Bill Gates, Microsoft Chairman and co-chair of the Bill and Melinda Gates Foundation, arrives for a meeting with House Foreign Affairs Committee members in the Rayburn House Office Building on Capitol Hill December 3, 2013.

( Chip Somodevilla/Getty Images )

Bill Gates, Microsoft Chairman and co-chair of the Bill and Melinda Gates Foundation, arrives for a meeting with House Foreign Affairs Committee members in the Rayburn House Office Building on Capitol Hill December 3, 2013.

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